package com.changgou.file.com.changgou.file.controller;


import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.com.changgou.file.util.FastDFSClient;
import com.changgou.file.com.changgou.file.util.FastDFSFile;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {
    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file) {
        try {
            //1.判断文件是否存在
            if (file == null) {
           throw new RuntimeException("文件不存在");
            }
            //2.获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)) {
              throw new RuntimeException("文件不存在");
            }
            //获取文件的扩展名称 后缀
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //获取文件的内容
            byte[] fileBytes = file.getBytes();

            //创建文件上传的封装实体类//传入文件名称 ,文件内容的字节,文件后缀名称
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename, fileBytes, extName);

            //基于工具类进行文件上传 并接收返回参数
            String[] uploadResult = FastDFSClient.upload(fastDFSFile);
            //封装返回结果  文件路径
            String url = FastDFSClient.getTrackerUrl() + uploadResult[0] + "/" + uploadResult[1];
            //将url
            return new Result(true, StatusCode.OK, "文件上传成功", url);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return new Result(false, StatusCode.ERROR, "文件上传失败");

    }
}
